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The top of an insulated cylindrical cont...

The top of an insulated cylindrical container is covered by a disc having emissivity 0.6 and conductivity 0.167 `"WK"^(– 1)m^(–1)` and thickness 1 cm. The temperature is maintained by circulating oil as shown in figure. Find the radiation loss to the surrounding in `"Jm"^(–2)s^(–1 )`if temperature of the upper surface of the disc is `127^(@)"C"` and temperature of the surrounding is `27^(@)"C"`.

A

`50 cm^(2)`

B

`48 cm^(2)`

C

`50 cm^(2)`

D

`52 cm^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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